Massage-machine.



PATENTED MAY 28, 1907 R. V. CLARK. MASSAGE MACHINE I APPLICATION Him AUG. 1, 1906.

2 SHEETS-SHEET 1.

PATENTED MAY 28, 1907.

R. V. CLARK.

MASSAGE MACHINE.

APPLICATION FILED AUG. 1, 1906.

2 SHEETS-SHEET 2.

v WI TNESSES f/VVE/YTOR UNITED STATES PATENT OFFICE.

RICHARD VERNON CLARK, OF ST. LOUIS, MISSOURI.

MASSQAGE-MACHINE.

pecification of Letters Patent.

Patented May 28, 1907.

Application filed August 1,1906. Serial No. 328,770-

' To a whom it may concern.-

Be it known that I, RIC ARD VERNON CLARK, a citizen of the United States, and a resident of St. Louis, in the State of Missouri, have invented certain new and useful Im' provemcnts in Massage-Machines, of which the following is a specification.

Other and further,objects will appear in,

the following description and will be more particularly pointed out in the appended claims.

In the drawings: Figure 1 is a side eleva-- ance with mypresent invention; Fig. 2 is a central sectional view of the machine, parts being shown in elevation; Fig. 3 is a section on line 33, Fig. 1; Fig. lisa section .on line 4 4, Fig. 1; Fig. MS a detail view of one of the plates forming the field'magnets; and Fig. 6 is an end view of the motor i'rame with the protecting cap removed.

The'motor casing comprises two members 1 and 2 madeof aluminium. The two members are held together by tie rods 3 which are anchored at oneendin internal bosses 4 near the front end of the member 1 and pass at their other ends through openings in the member 2 being held at these latter ends by nuts5. Within the casing member 1 are positioned the field'.magnets fi'which are formed of a massage-member-securing device which number of plates 7 (one being shown in de-' tail-in Fig. -5.) and are within the field 8.

As the casing or'frame of the motor is made of aluminium, it is impracticable to journal the shaft of the armature therein and for this reason bearing pieces 11 and 12, made of brass or other suitable material, are provided. The bearing piece 11 is formed with a flange 11 at one end, which flange bears against the inner wall of the casing member 1. The other end of the bearing .piece projects through the wallto the exterior of the casing, the projecting portion being provided with external threads 131 On this threaded projecting portion is fitted a provided with aifenlarged internally threaded socket portion 14 engaging the threads 13 and abutting the outer wall 501 the cz'ising member 1, whereby the bearing 1.1 is held socurely to the casing member. The massagemember-socuring-deviceis also provided with a smaller internally threaded socket portion 15 to receive the shank 16 of a massage member 17 of any suitable form. A screw plug 18 fits into an opening which leads into a lubricant space at the rear end of the socket portion 14, said lubricant space being filled by a packing 19 which feeds the lubricant to the bearing. The other bearing piece 12 is provided with. an annular flange 20 which bears against the inner wall of the casing member 2. This bearing piece is also provided. with an external annular groove 21 havingzvport 22 leading to the bearing.

Within the groove is located a lubricant packing 23 to which the lubricant is fed through a plugged opening 24 in an annular flange 25 on the member 2 and surrounding the bearing piece 12.

An armature shaft 26, having an armature 27, is journaled in bearing pieces 11 and 12, and carries on the end that projects from the bearing 12 on the outside of the casing member 2, a device for inducing vibration in the frame or casing of the motor. F or this purpose, the projecting end of the shaft is screw threaded and carries a nut 28 which acts to limit the end thrust of the shaft and at the same time limits the inward movement of an eccentric disk 29 which is also screwed onto the shaft. This eccentric disk carries a pro jection. 30 extending parallel to the axis of the shaft and an annular peripheral flange 31. A second eccentric disk 32 fits on the periphery of disk 29 and is provided on one side 1W1th a groove 33'in which fits the annular flange 31 of disk 29. A third and clamping disk 34 is fitted on the shaft 26 on the side of the disk 32 opposite the flange 31 This third disk has a diameter greater than the periphcry of the disk29 so as to clamp disk 32 between it and the flange 31. Disk S 1 is provided with an opening 35 into which extends projection 30 to prevent relative turning be tween disks 29 and 34. To hold disk 32 clamped between dist and 3 1, a jam nut 36 provided on sh ac to c i zgage the movable clamping disk 3 1.

It is apparent that when jam nut 36 is loosened, the disk 32' may be turned so as'to assume either a position concentric with shaft 26 or a number of eccentric positions. The disk 23 i carries a pointer or arrow 37 which is adapted to register with a number of marks 3% on disk 32 to indicate the amount of vibration.

To prevent the vibrator injuring any one during the operation of the machine, that end of the casing carrying the vibrator. is provided with a pair of spring lingers 39 which are engaged by beveled lugs 40 upon the interior of a cap 41 which tits upona reduced portion 42 of the casing member 2.

The cap, casing member 2 and casing member l are provided with openings 43, 44 and 45 to provide for the ventilation of the motor to keep the motor cool.

The shaft 26, on the'end opposite the vibra tor and within the casing, is provided with a commutator l6. Bearing upon opposite sides of the commutator is a pair of brushes 4:? which are .mounted within brass sleeves is positioned within insulated sleeves 49. Insulated sleeves 49 are screwed into the casing and extend to the exterior thereof, where they are provided with screw caps 50 which, when removed, permit the brushes 7 to be renewed. The brushes are yieldingly held against the commutator by helical springs 51 which abut against insulated disks 52 within the caps 50. The brushes are connected to the lield ol the motor by conductors 53 which are located entirely within thecasing, being in engagement with the brass sleeve s8.

The motor casing is supported by a handle which is yieldingly connected to the motor in a manner to be hereinafter described. The handle comprises a tubular metallic member 54, surrounded by a soft rubber sleeve and provided with screw threads at each end. Upon the lower end of the tubular member is fitted a lerrule 56 having a central opening in which titted an insulating bushing 57 formed oi soft rubber and provided with a pcripheral groove so that it will be held to the ferrule. Upon the upper screw threaded end of the tubular member 54 is fitted an internally threaded collar This collar forms one 01" the clamping members of the lower horizontal arm 59 of a Z-shaped bracket connecting the handle to the casing of the motor. This arm 59 is provided with an opening and is fitted. about tubular member 54 so as to rest on collar 58, being held against said collar by clamping nut 60. It pin 60 is passed through nut 60 and arm 5'3- into collar 58.

The vertical arm 61 of the Z -shaped bracket provides the yielding connection between the handle and the casing. The upper horizontal arms -62 is provided with bolt openings through which sore bolts G l whi T his keeper r the screw bolts, as the casing, being made of aluminium. will not" form a sufficient anchorage.

The wirestiti from the field ol the motor lead through an opening 67 in the casing to and through an insulated bushing (38 in the upper end of the tubular member 54'.

Within the tubular member 54 is located the switch for controlling the motor. This switch comprises an insulated contact supporting member 69 having a pair of contacts 70 which are connected to one of the lead wires of the motor. The contact supporting member is also provided with a channel 71 through which passes the other lead wire, the two lead Wires being SUIIOUIltlOtl by one insulation and passing through bushing 57 to any suitable source of electricity. break the circuit, a movable switch member is provided. It comprises an insulated body 72 carrying a contact 73 to bridge contacts 70. This insulated body is moved by a linger piece 7 L extending from said body through a slot 75 in tubular member M and rubber sleeve 55.

The operation of the invention is as fol- .lows: The vibrator is adjusted in the manner hereinbclore described to get the desired vibrations and the switch is then thrown on. Asthc armature revolves, the vibrator induccs vibration in the motor casing and, as

the massage member is rigid therewith, vi-

bration is induced in said massage member.

ilaving thus described my invention, what l claim and desire. to secure by Letters Patent is:

1. In a massage machine, the combination of the casing, a mot l therein, a bearing for the shaft ol the motor, engaging the inner l'acc of the casing, and projecting through the casing to the outside thcreol', and a massage member securing device engaging the projecting end ol the bearing.

2. in a massage machine, the combination of the casing, a motor therein, and a motor shaft bearing,- and a massage-member securing-device engaging respectively the inner and the outer walls ol the casing and connected together.

3. In amassage machine, a casing a bearing engaging the inner wall thereof and provided with a threaded portion projecting to the outside of the casing, and a 'massage member securing device secured on the threaded projecting end of the bearing.

4'. The combination of a motor casing, a motor therein having a shaft extending to the exterior of the casing. a massage member socured to the casing, means For inducing vibrations in the casing secured to that portion of the shalt extending to the exterior of the casing, and a removable cap secured to the casing and inclosing said means.

5. The combination with a 'ng, of a motor therein, a mass; ncniher secured to the To make and casing, an eccentric disk secured to the motor shaft and provided with a peripheral flange anda projection extending in a direction parallel to the shaft, an eccentric disk turning on the periphery of the first disk. an ec centric clamping disk holding the second named disk 1n engagement with the flange on thefirst named disk, and a nut movable on the shaft to hold the clamping disk in place.

"6. In a massage machine, an electric m0- tor, a handle supporting the motor and pro 'vided with a central tube having a slot, lead wires extending-through the tube, an insulated contact supporting member arranged Within the tube having a channel through which one of the lead wires passes, and carrying a. pair ofcontacts to which the other lead wire is connected, a sliding switch memher within the tube adapted to bridge the the slot.

7. ha massage machine, an electric n10- .tor, and a handle comprising a central tube provided with screw threaded ends, a rubber sleeve surrounding the tube, a ferrule at one end of the tube abutting one end of the sleeve, a collar at the other end of the tube abutting the other end of the rubber sleeve, a bracket surrounding the tube and connectedwith the motor, and a nut clamping the bracket against the collar.

The foregoing specification signed at St. Louis Missouri this 30th day of July, 1906.

RICHARD VERNON CLARK.

In presence of two witnesses W. S. HELLER, RUBY JONES..

contacts, and afinger piece extending through Y 

